Contents Executive Summary ES.1 Introduction............................................................................................................ ES-1 ES.2 Data Collection and Regional Information ........................................................ ES-3 ES.3 Stakeholder Stormwater Management Policies ................................................ ES-3 ES.4 Assess and Prioritize Existing Deficiencies........................................................ ES-3 ES.5 Identification of Regional Projects ...................................................................... ES-5 ES.6 Feasibility of Stormwater Reuse.......................................................................... ES-8 ES.7 Evaluation of Stormwater Management Programs .......................................... ES-8 ES.8 Recommendations and Schedule ...................................................................... ES-10 Section 1 Introduction 1.1 Legislative Background...........................................................................................1-1 1.2 Master Stormwater Management Plan..................................................................1-2 1.3 Wekiva Basin Legislative History ..........................................................................1-4 1.3.1 Wekiva River Protection Act ...................................................................1-4 1.3.2 Wekiva-Ocala Greenway..........................................................................1-6 1.3.3 Outstanding Florida Water......................................................................1-6 1.3.4 Wild and Scenic River Designation ........................................................1-6 1.3.5 Florida Aquatic Preserve..........................................................................1-7 1.4 Objective ....................................................................................................................1-7 Section 2 Wekiva Study Area Regional Information 2.1 Wekiva Study Area ..................................................................................................2-1 2.1.1 Data Collection..........................................................................................2-1 2.2 GIS Mapping Data....................................................................................................2-1 2.3 Topographic Data.....................................................................................................2-2 2.4 Land Use....................................................................................................................2-2 2.5 Soils.............................................................................................................................2-4 2.6 Watersheds ................................................................................................................2-5 2.6.1 Subbasins....................................................................................................2-8 2.7 Rainfall .......................................................................................................................2-9 2.7.1 Precipitation Characteristics and Trends.............................................2-10 2.8 Surface Water Stages & Flows ..............................................................................2-11 2.8.1 Steamflow Characteristics and Trends.................................................2-12 2.8.2 Lake Level Characteristics and Trends ................................................2-14 2.9 Water Quality..........................................................................................................2-15 2.9.1 Water Quality Monitoring .....................................................................2-15 2.9.2 TMDL Related Issues..............................................................................2-17 2.9.2.1 Basin Status Reports ...............................................................2-18 2.9.2.2 TMDL Activities......................................................................2-20 2.10 Groundwater...........................................................................................................2-23 A i S:\9247\44812\Report\Final\TOC.doc Table of Contents Wekiva Parkway and Protection Act Master Stormwater Management Plan Support 2.10.1 Hydrogeology of the Aquifer Systems.................................................2-23 2.10.1.1 Surficial Aquifer System........................................................2-23 2.10.1.2 Intermediate Confining Unit.................................................2-23 2.10.1.3 Floridan Aquifer System........................................................2-23 2.10.2 Groundwater Flow..................................................................................2-24 2.10.2.1 Surficial Aquifer System........................................................2-24 2.10.2.2 Intermediate Confining Unit.................................................2-24 2.10.2.3 Floridan Aquifer System........................................................2-25 2.10.2.4 Regional Groundwater Flow.................................................2-25 2.10.3 Recharge ...................................................................................................2-26 2.10.3.1 Recharge Criteria Rulemaking ..............................................2-29 2.10.4 Projected Drawdowns............................................................................2-30 2.10.5 Groundwater Contamination................................................................2-31 2.11 Wekiva Aquifer Vulnerability Assessment.........................................................2-32 2.12 Drainage Wells........................................................................................................2-32 2.13 Public Lands............................................................................................................2-34 Section 3 Stakeholder Stormwater Management Policies 3.1 Introduction...............................................................................................................3-1 3.2 Lake County ..............................................................................................................3-1 3.2.1 Level of Service..........................................................................................3-1 3.2.2 NPDES MS4 Permit...................................................................................3-2 3.2.3 Stormwater System Inspection and Maintenance ................................3-2 3.2.4 Redevelopment Control Measures .........................................................3-3 3.2.5 Current Water Resources Funding Mechanisms ..................................3-5 3.3 City of Eustis .............................................................................................................3-5 3.3.1 Level of Service..........................................................................................3-5 3.3.2 NPDES MS4 Permit...................................................................................3-6 3.3.3 Stormwater System Inspection and Maintenance ................................3-6 3.3.4 Redevelopment Control Measures .........................................................3-7 3.3.5 Current Water Resources Funding Mechanisms ..................................3-7 3.4 City of Mount Dora ..................................................................................................3-8 3.4.1 Level of Service..........................................................................................3-8 3.4.2 NPDES MS4 Permit...................................................................................3-9 3.4.3 Stormwater System Inspection and Maintenance ..............................3-10 3.4.4 Redevelopment Control Measures .......................................................3-10 3.4.5 Current Water Resources Funding Mechanisms ................................3-11 3.5 Orange County........................................................................................................3-11 3.5.1 Level of Service........................................................................................3-11 3.5.2 NPDES MS4 Permit.................................................................................3-12 3.5.3 Stormwater System Inspection and Maintenance ..............................3-13 3.5.4 Redevelopment Control Measures .......................................................3-15 A ii S:\9247\44812\Report\Final\TOC.doc Table of Contents Wekiva Parkway and Protection Act Master Stormwater Management Plan Support 3.5.5 Current Water Resources Funding Mechanisms ................................3-15 3.6 City of Apopka........................................................................................................3-16 3.6.1 Level of Service........................................................................................3-16 3.6.2 NPDES MS4 Permit.................................................................................3-17 3.6.3 Stormwater System Inspection and Maintenance ..............................3-18 3.6.4 Redevelopment Control Measures .......................................................3-18 3.6.5 Current Water Resources Funding Mechanisms ................................3-19 3.7 Town of Eatonville .................................................................................................3-19 3.7.1 Level of Service........................................................................................3-19